If it does survive the trek into interstellar space, it won't be the first to get there. Voyager 1 and Voyager 2, both ...
It's a deceptively simple question that has puzzled astronomers since the 1960s. Now, thanks to data from NASA's New Horizons probe, they have arrived at the best-yet estimate of how dark — or ...
In the outer reaches of the Solar System, beyond the ice giant Neptune, lies a ring of comets and dwarf planets known as the ...